Eaton Quicklag Circuit Protection Products

Corporate Overview

Founded in 1911, Eaton® Corporation is a diversified industrial manufacturer and a global leader in various industrial markets, including:

• Electrical systems and components for power quality, distribution and control
• Hydraulics components, systems and services for industrial and mobile equipment
• Hydraulics, fuel and pneumatic systems for commercial and military aircraft
• Intelligent truck drivetrain systems for safety and fuel economy
• Automotive engine air management systems, powertrain solutions and specialty controls for performance, fuel economy and safety

With 2008 sales of $15.4 billion USD, Eaton employs 75,000 people all over the world and sells products to customers in more than 150 countries.

Quicklag Circuit Protection

Quicklag Miniature Circuit Breaker and Residual Current Devices

Quicklag Miniature Circuit Breaker

Over 50 Years of Service to the Australian Electrical Industry

The Quicklag range of miniature circuit breakers was originally released in Australia by Email-Westinghouse in 1957 before the company changed its name to Cutler-Hammer and then to Eaton. Through the years, the Quicklag has been widely recognised as setting the electrical industry benchmark for Miniature Circuit Breakers. Some of the reasons include:

• Toggle centre position trip indication: Clearly shows when the breaker has tripped
• Ratings up to 100A in the one frame size: Common frame pole width to avoid the need for hybrid / mixed width chassis
• Ability to be mounted side-by-side without de-rating: Utilises the maximum rating of the breaker
• Fully integrated surge protection solution: With the use of Quickmov™™ Surge Diverters, connects to the chassis busbar for the lowest source impedance and maximum surge performance

Quicklag is the largest and most complete family of industrial thermal magnetic miniature circuit breakers. They provide the feature of steel frame calibration and arc chutes in every pole. Quicklag circuit breakers are provided in ranges from 8 to 100 amperes continuous in one, two, three and four-pole configurations.

The Quicklag family includes a range of electrical safety devices: the ELQ single and two poles RCBO and the ELDO single and multi-pole earth leakage circuit breakers. Accompanied by Echidna panel boards, busbar chassis and many accessories, including the Quickmov™™ integrated surge protection device. Quicklag is the ideal choice for industrial and commercial applications.

With over 50 years of service to the Australian Electrical Industry, Quicklag Circuit Breakers have a proven track record of reliability and safety.

Product: Miniature Circuit Breaker

Breaking Capacity: 6 kA

Voltage: 240/415 VAC 50/60 Hz

Amperage: 8-100A

Poles: 1, 2, 3, and 4 Poles

Quicklag Miniature Circuit Breakers are used in a variety of circuit protection applications that range from protection for submain circuits and light and power circuits through to various motor starting applications.

The Quicklag Miniature Circuit Breaker is available in 1, 2, 3 and 4 pole construction in thermal current ratings from 8A to 100A, all of which are physically interchangeable.

Quicklag Miniature Circuit Breakers are designed to protect electrical circuits from damage caused by overload or short circuit.

* Non-Auto Breaker

ELQ Earth Leakage Breaker

Protection applications include such areas as electrical office equipment, industrial plants, electrical hand tools, GPOs and socket outlets. Special high sensitivity (10mA) ELQ breakers are available for hospital applications and medical equipment.

The ELQ's ability to respond to these fault currents is remarkably fast – in fact, the response time is less than 40 milliseconds in all ELQ's levels of rated sensitivity. Although the breaker combines three functions, the mounting width space is the same as a standard single-pole Quicklag circuit breaker.

Features and Benefits

• Overload, short circuit and residual current protection in one compact unit
• 6kA at 240V AC/Sym (AS214)
• Sensitivity available in 10, 30 and 100mA models.
• Approval No. N20187
• Trip indication window
• Test button with preventative accidental push design

Product: Earth Leakage Circuit Breaker

Breaking Capacity: 6 kA

Voltage: 240 VAC 50 Hz

Amperage: 10-32A

Poles: 1 and 2 Poles

The ELQ Earth Leakage breaker combines overload, short circuit and residual current (earth leakage) protection in one compact unit in either one or two pole configurations. The two pole ELQ incorporates a switched neutral on the left side pole.

This style of circuit breaker, which has become mandatory in new installations, safeguards people from the danger of electric shock by instantly interrupting the electrical circuit to the load when a fault current to earth exceeds the rated sensitivity.

Applications

• Electrical office equipment
• Industrial plants
• Electrical hand tools
• GPOs
• Socket outlets
• Mining sites

* For industrial use only

ELDO/QELDO Residual Current Device

The ELDO residual current relay will instantaneously detect a current imbalance due to earth leakage that may occur within the electrical distribution system. The ELDO will trip the associated circuit breaker, by means of a separate shunt trip fitted to the breaker and isolate the supply to create a safe condition.

The ELDO residual current device can be mounted on its own bracket or can be directly clipped into any Quicklag chassis, either separately or next to the Quicklag circuit breakers. In either formation, the two units are fitted as separate components. Each ELDO comes complete with a comprehensive instruction sheet detailing installation and connection information. These compact residual current relays fit into the same space as a single pole Quicklag breaker.

The QELDO is a combination of a residual current relay assembled with any Quicklag circuit breaker providing overload, short-circuit and earth leakage protection. The QELDO has an inbuilt shunt trip device for tripping the breaker. The QELDO is mechanically linked internally thereby optimising the tripping operation of the device. A QELDO can incorporate any of the characteristics and ratings associated with both the Quicklag miniature circuit breaker and the ELDO devices. QELDO is a made to order item.

The QELDO relay uses a mechanical link to trip the breaker and cannot be separated from the breaker. The QELDO and Quicklag breaker must be ordered assembled at the factory, also indicating which side the QELDO will be on (e.g. QELD034 + Q320 RHS).

Features and Benefits

• Instantaneously detects a current imbalance due to earth leakage
• Fits in the same space as a single pole Quicklag breaker
• Sensitivity range available from 10mA to 1000mA
• AS3190 approval and CS399993N certification

Applications

• Electrical office equipment
• Industrial plants
• Electrical hand tools
• GPOs
• Socket outlets
• Heavy industrial machinery

* These relays have a separate change-over relay for use with contactors and undervoltage release devices.

* A = AS3190 approval and C = CS399993N certification

Quickmov™ Surge Protection Device

Quickmov™ is an integrated Surge Protection Device (SPD), designed to protect single and multiphase electrical distribution systems against the damaging effects of voltage spikes and surges. Eaton's Quickmov™ plugs straight into a Quicklag loadcentre, connecting to the chassis busbar for the lowest source impedance. Its integrated HRC fuse enables the Quickmov™ to be connected directly to the neutral bar, providing the shortest possible cable length for superior protection of the entire loadcentre. It saves space and installation time by eliminating the need to install a separate over-current protection device. A wide range of accessories enables the Quickmov™ to be easily adapted to many other applications and most DIN loadcentres and panelboards. Quickmov™ employs advanced MOV technology with embedded thermal protection housed in a dual barrier flame retardant case to provide optimum surge protection performance without compromising safety and reliability. A fail safe mechanical flag provides indication of MOV status via a dual layer viewing window.

Key Features

• Surge rating 30kA Inom & 60kA Imax
• Integrated surge protection solution
• In-built HRC fusing
• Safe thermal disconnect
• Dual barrier flame retardant housing
• Fail safe status indicator
• Protection for M.E.N and non-M.E.N applications
• Designed in Australia

Applications

• Multi-storey Complexes
• Commercial Buildings
• Hospitals & Medical Centres
• Hotels & Clubs
• Schools & Universities
• Process & Control Systems
• UPS & Computer Systems
• Traffic Control Systems
• Emergency Services Systems

Installation

For main switchboard installations typically with an adjacent M.E.N point, the Quickmov™™ should be mounted directly on the chassis busbar and close as possible to the neutral bar on Quicklag style board otherwise mounting accessories will allow for installation in other types of switchboard or enclosure systems. For installation in distribution boards remote from the M.E.N point, the Quickmov™ should be used in conjunction with a SPD50NGi neutral-earth surge arrestor.

Operation

The Quickmov™™ uses a mechanical flag to indicate its operating and protection status. The flag is visible through the window on the front face of the unit. If the window is showing a "GREEN" coloured flag then the Quickmov™™ is functioning normally and there is still protection available. When the window changes to show a "RED" coloured flag, this means the unit is damaged and needs to be replaced. For more information on operation refer to the Quickmov™™ Installation Guide.

Quicklag Accessories

Quicklag's extensive range of accessories extends its features and benefits to many applications. Moulded covers and polycentres allow for retrofit installations where space is limited. A wide range of locking devices can easily provide extra security and safety in situations where it is required.

Accessory Identification

1. SIQ-1 Pole Moulded Cover
2. S3Q-3 Pole Moulded Cover
3. QPC - Quicklag Polycentre 6 Pole
4. SC3Q, SC6Q, SC12Q, SC24Q - Sliding Clip Tray 3, 6, 12 and 24 Pole
5. T50Q-50A Terminal 25mm²
6. T100Q - 100A Terminal 50mm²
7. QLUGKIT - Tunnell Terminal Kit 35mm²
8. PLKQ1 - Handle Lock 1 Pole + Padlock
9. PLKQ24 - Handle Lock 2 or 4 Pole + Padlock
10. PLKQ3 - Handle Lock 3 Pole + Padlock
11. 1517-1281/1 - Single Lock Off/On Device
12. 1517-1290/1 - Lock Off/On Device (opposing breaker)
13. 1517-1277/1 - Lock Off Device (opposing breaker)
14. ELQ-E-KIT - ELQ to E Frame Adaptor Kit (S1Q also required)
15. C36Q - Standard Clip Tray 36 Pole
16. 1517-0525/1 - Alarm Switch Right Hand Mount (Factory Fitted Only)
17. 1517-1299/1 - Lock Off Bracket Kit (10 pack)
18. LKDQ - Lockdog Quicklag (10 pack)
19. 1517-1299/1 - Lock Off Bracket Kit (10 pack)
20. LKDELQTW - Lockdog Kit ELQ (No Padlock, 1P)

Quicklag Panelboards

The Quicklag Panelboard is manufactured in Eaton's facility using Australian materials and comes in two versions, the Echidna QCE, which has an IP44 rating and the EWQ, which has an IP66 rating. The EWQ is also available in a "+" format with extra width and depth for those times when more space is needed.

As well as the Quicklag Breakers and Panelboards, Eaton manufacture a series of metal loadcentres called LCQ which are also suited to rigorous industrial environments.

LCQ Metal Loadcentres

Key Features

• Available in 4 to 18 poles
• Complete with active busbar, earth bar & neutral link
• Metal construction and Ripple Grey finish as standard
• Coin face key lock optional (refer LCQCLK)
• Designed to meet IP40 requirements as standard
• IP50 and IP54 requirements available on request
• Special colours available on request

Applications:

• Industrial switchboards
• Commercial switchboards
• Equipment box
• Damp, rugged and harsh environments

For Ripple Orange finish add "-RO" to the end of the Cat. No.

For Ripple Orange finish add "-RO" to the end of the Cat. No. Door = + 26mm extra for depth. Flush cover = + 50mm extra for height and depth.

Echidna QCE IP44 Panelboards

The Echidna QCE Panelboards provide a versatile and economical way to house and protect circuit breakers for commercial and industrial applications.

The QCE is IP44 rated and is supplied complete with a type tested 3 phase colour coded insulated busbar system rated for 250A and 20kA for 0.1 second. The QCE, like all Quicklag panelboards, is fitted with a neutral and earth bar, a lockable door hinged on the right as well as a circuit schedule card and card holder. The QCE comes with conduit knockouts in the top and bottom of the enclosure, flush lock and is finished in a powder coat grey ripple as standard. Orange is also available on indent.

Features & Benefits

• IP44 as standard - better suited to damp environments
• A horizontal cut-out for 24 x 18mm module width DIN rail accessories is standard on all panel boards, allowing basic control to be easily added
• Large removable gland plates, top and bottom for easy cable access
• Pintle hinged allows quick removal for maximum access
• Easy "lift-off" escutcheon permitting totally open work area
• Cable troughs are part of the design element and provide a neat area for cables
• Double screw, fully rated Earth and Neutral bars

Like its namesake, the Echidna has a number of unique qualities that make it perfectly suited to its normal operating environment.

Note: Left-hand hinged door available on request. For Ripple Orange finish add -RO to the end of the Cat No. Other board colours are available upon request. 400A mainswitch available on request.

EWQ IP66 Panelboards

The EWQ Panelboard is IP66 rated and is supplied complete with removable gland plates on top and bottom. Designed for the harshest of industrial environments and built with the most arduous conditions in mind, the EWQ Panelboard excels with its fully welded construction. The EWQ is fitted with a type tested 3 phase colour coded insulated busbar system rated for 250A and 20kA for 0.1 second.

The standard EWQ Panelboard is also equipped with a removable hinged escutcheon, a fully rated neutral bar and fully rated earth bar, a lockable door hinged on the right, as well as a circuit identification label, a circuit schedule card and card holder. The EWQ's box and door are finished in a powder coat grey ripple polyester as standard while the hinged escutcheon is painted white as standard. A horizontal cutout for 24 x 18mm module width DIN rail accessories is standard on all panelboards, allowing basic control to be easily added. Orange finish is available on indent.

Note: Left-hand hinged door available on request. For Ripple Orange finish add -RO to the end of the Cat No. Other board colours are available upon request. For 100A main switch add QT to end of Cat No (only on 24 and 36 Pole), 400A main switch available on request.

EWQ+ IP66 Panelboards

The EWQ+ range of panelboards have all the same inclusions and features as the EWQ range but with the added benefit of more space inside, ideal for mounting large ancillary equipment. The EWQ+ also includes a hinged escutcheon which can be removed from the enclosure providing good access for ease of work within the panelboard.

The panelboard is fitted with type tested 3-phase, colour coded, insulated busbar system, rated at 250A/20kA for 0.1second. The enclosure features fully welded construction, with a right hinged door with 3-point locking and a lockable L-handle. The standard finish is grey ripple polyester.

Note: Left-hand hinged door available on request. For Ripple Orange finish add -RO to the end of the Cat No. Other board colours are available upon request. For 100A main switch add QT to end of Cat No(only on 24 and 36 Pole), 400A main switch available on request.

Quicklag Chassis

Manufactured by Eaton, designed and tested to the requirements of AS1136.1, AS3439.1 and 3, Quicklag chassis assemblies are available in a number of configurations. They are used by Eaton in Quicklag panelboards and by Original Equipment Manufacturer's in their own panelboard and switchboard assemblies throughout the electrical industry.

The Quicklag chassis is available in a standard 3 phase construction for either vertical or horizontal applications and is universal in that it can be fed from either end of the busbar chassis. The Quicklag chassis is also made to suit narrower applications and can be supplied in a half width format. A neutral pole busbar can be added to the 3 phase busbar system by Eaton.

Chassis without Main Switch

The Quicklag chassis consists of a galvanised steel base plate, 3 phase insulated busbars and insulated busbar supports. The base plate has two rows of clip in brackets for the mounting of Quicklag breakers while the busbar is mounted to the base plate by the insulated supports.

The standard Quicklag chassis assembly has been tested in accordance with AS1136.1, AS3439.1 and 3 and is rated for 250A continuous current and has a withstand capacity of 20kA for 0.1 seconds. Non-standard variations are available and can be selected from units with 250A, 16kA for 0.5 second or 300, 16kA for 1.0 second and 400A, 20kA for 1.0 second. To order the non-standard variation chassis please contact your local Eaton representative.

Chassis with Main Switch

The Quicklag chassis can be easily fitted with a Main Switch for isolating the supply to the chassis.

QT Series

The 100A Main Switch, a Quicklag Non-Auto Q3100N, can be mounted either in the top centre feeding into the chassis or can be positioned on the chassis pan where it will occupy 3 pole spaces of the chassis.

MT Series

A 250A or 400A Main Switch can be fitted readily to the standard Quicklag Chassis and provides many excellent characteristics such as visible indication of the positive load break and fault make contact operation. The operating handle is pad-lockable in the OFF position for added safety and security.

Quicklag Panelboard Accessories

The wide range of Quicklag panelboard accessories extends the features and benefits to meet different requirements. Locking systems provide added security to the boards, flush surrounds allow for in-wall installations and the choice of an 80, 100, 250 or 400A main switch to suit the panelboards.

Accessories

1. QSEALKIT - Sealing Screws for Quicklag Covers (10 Pack)
2. LCQCLK - Load Centre Coin Lock Kit
3. LCQ12BP, LCQ18BP - 3 Phase Insulated Busbar Kit, 12 Pole & 18 Pole
4. PB250MS3PD, PB400MS3PD - Main Switch 3 Pole DIN Cutout 250A and 400A
5. 1521-1236/1 - Busbar Splitting Kit
6. 1521-0070/15 - 24 Pole Quicklag Buscomb
7. ECELOCK - Field Fit E-Lock Kit
8. ECPLTH*#: (#: 1 = 1 Tier, 2 = 2 Tier, 3 = 3 Tier (*: G = Stainless Steel, P = Painted Black, -RG = Ripple Grey, -RO = Ripple Orange)
9. 1521-1287/1 - Tee-off Insulation Cap
10. ECFLSRA - Flush Surround 750mm Enclosure
11. QPF - Quiclag Pole Filler
12. 1517-1281/1 - Single Lock Off/On Device
13. 1517-1290/1 - Lock Off/On Device (opp breaker)
14. 1517-1277/1 - Lock Off Device (opp breaker)
15. ANEWEMLTM2 - Emergency Lighting Test CCT 20A 2N/C
16. ANEWEMLTM4 - Emergency Lighting Test CCT 24A 4N/C

Quicklag Technical Data

Quicklag Dimensions

Quicklag Dimensions

ELQ Dimensions

ELDO / QELDO Dimensions

QCE Panelboard Dimensions

Puggle Enclosure Dimensions

EWQ Panelboard Dimensions

EWQ+ Panelboard Dimensions

NOTES: 1. STANDARD MAIN SWITCH IS EITHER QUICKLAG (100A MAX) OR HOLEC (250A MAX). 2. BOX, EXCUTCHEON AND DOOR, MANUFACTURED FROM 1.5mm ZINC SEAL. 3. FINISH: RIPPLE TEXTURE POLYESTER POWDERCOAT, APPLIED IN ACCORDANCE WITH THE MANUFACTURERS RECOMMENDATIONS, 4. COLOUR: STORM GREY (N42 TO AS2700), WHITE GLOSS ESCUTCHEON. 5. THREE POINT LOCKING FOR 600mm TO 1400mm HIGH BOX, 6. FOUR POINT LOCKING (2 HANDLES) FOR 1600mm TO 2000mm HIGH BOX.

Quicklag Technical Data

Eaton Quicklag Time Current Curve

Time-current curves show response times in seconds for applied overcurrent expressed in percentages of rated current. The values are for breakers operating in open air in an ambient of 40°C, or inside an enclosure in an ambient of 25°C, with no current through the breaker before application of overcurrent.

The characteristics are presented not as a single curve but as a band defined by maximum and minimum curves. The characteristic curve for any particular breaker will lie within this band. However, this does not imply that its tolerance band is as wide as the plotted band, which allows for manufacturing and calibrating variations for the range overall.

Specifications - The specifications in this publication were correct at the time the publication went to press. Eaton Corporation reserves the right to change the specifications of its products without notice.

Installation and Use - The products described in this publication should only be installed and used in accordance with any accompanying instruction sheets. To the full extent permitted by law, Eaton Corporation expressly excludes all and any liability arising from installation or use of the products which is not in accordance with the relevant instruction manual.

Eaton ELQ Time Current Curve

Time-current curves show response times in seconds for applied overcurrent expressed in percentages of rated current. The values are for breakers operating in open air in an ambient of 40°C, or inside an enclosure in an ambient of 25°C, with no current through the breaker before application of overcurrent.

The characteristics are presented not as a single curve but as a band defined by maximum and minimum curves. The characteristic curve for any particular breaker will lie within this band. However, this does not imply that its tolerance band is as wide as the plotted band, which allows for manufacturing and calibrating variations for the range overall.

Specifications - The specifications in this publication were correct at the time the publication went to press. Eaton Corporation reserves the right to change the specifications of its products without notice.

Installation and Use - The products described in this publication should only be installed and used in accordance with any accompanying instruction sheets. To the full extent permitted by law, Eaton Corporation expressly excludes all and any liability arising from installation or use of the products which is not in accordance with the relevant instruction manual.

Fuse Backup

Fuse brands recommended are based on exhaustive type testing conducted at the Australia Electrical Test Centre, University of South Australia, in accordance with the relevant subclauses under clause 8.2.3 of Australian Standard AS3439.1-1993. Peak let-through current and energy, as stated by the respective fuse suppliers, have been detailed in the technical data grid below to assist in choosing a replacement fuse. The recommended back-up fuse ratings are valid for prospective system fault levels up to 50kA rms, 415VAC, 3-phase. The minimum fuse size which can be used for such applications is based on grading under overload, one breaker with one fuse. Minimum BS88/DIN fuse sizes recommended for use with Eaton circuit breakers is as follows: Quicklag 8-16A: 63A; Quicklag 20-40A: 80A; Quicklag 50-63A: 100A; Quicklag 80-100A: 160A; ELQ-TW 10-32A: 63A.

AS3000-1991 - Attention is drawn to clause 2.19.4.4 of AS3000-1991 requiring that fault current limiters protecting fire and life equipment shall not be affected by a fault on the general installation

AS/NZS3000-2000 - Attention is drawn to clause 7.10.4.4 of AS/NZS3000-2000 requiring that fault current limiters protecting fire and life shall not be affected by a fault on the general installation.

D.O.L Starting

This table is based on average 3-phase, 415VAC motors only, holding 125% FLC continously and 600% motor FLC for at least 5 and at least 10 seconds as shown. The breakers listed in this table, have either solid state or thermal/magnetic trip releases. The breaker having adjustable thermal and/or magnetic settings must be set at their minimum values.

AS3000-1991

* These breakers do not provide protection against short time overload currents in accordance with AS3000-1991, section 2.4.3.4 (b). * A separate overload protection device should be used in conjuction with this breaker (refer AS3000-1991, section 2.4).

AS/NZS3000-2000 - Attention is drawn to AS/NZS3000-2000, section 2.4.3.2 which requires coordination between the conductors and the protective device. Note that this may involve provision of additional overload protection or appropriate cable size selection.

Star Delta, Auto-transformer, Resistor or Reactance Motor Starting

This table is based on average 3-phase, 415VAC motors only, holding 125% FLC continously and 350% motor FLC for at least 20 seconds as shown. The breakers listed in this table, have either solid state or thermal/magnetic trip releases. The breaker having adjustable thermal and/or magnetic settings must be set at their minimum values.

AS3000-1991

* These breakers do not provide protection against short time overload currents in accordance with AS3000-1991, section 2.4.3.4 (b). * A separate overload protection device should be used in conjuction with this breaker (refer AS3000-1991, section 2.4).

AS/NZS3000-2000 - Attention is drawn to AS/NZS3000-2000, section 2.4.3.2 which requires coordination between the conductors and the protective device. Note that this may involve provision of additional overload protection or appropriate cable size selection.

Fire Pump Motor Starting

This table is based on average 3-phase, 415VAC motors only, holding 125% FLC continously and 600% motor FLC for at least 20 seconds as shown. The breakers listed in this table, have either solid state or thermal/magnetic trip releases. The breaker having adjustable thermal and/or magnetic settings must be set at their minimum values.

AS 3000-1991

The recommended breaker ratings are based on AS 3000-1991, section 2.19.9.2 and that only one fire-pump motor is protected by each recommended circuit-breaker rating.

* These breakers do not provide protection against short time overload currents in accordance with AS3000-1991, section 2.4.3.4 (b). * A separate overload protection device should be used in conjunction with this breaker (refer AS3000-1991, section 2.4).

AS 3000-2000

The recommended breaker ratings are based on AS/NZS3000-2000, section 7.10.9.2 and that only on fire-pump motor is protected by each recommended circuit breaker rating. Attention is drawn to AS/NZS3000-2000, section 2.4.3.2 which requires coordination between the conductors and the protective device. Note that this may involve provision of additional overload protection or appropriate cable size selection.

Earth Fault Loop Impedance

Maximum Values of Earth Fault-Loop Impedance (Zs at 230V)

This table was calculated using the formula defined in clause B4.5

Maximum circuit lengths, in metres, for different size of conductors and protective devices using approximate mean tripping currents (la)*

This table was calculated using the formula defined in clause B5.2.2

Cascading and Discrimination Tables

Cascading and Discrimination of Series Connected Eaton Quicklag MCB and Moulded Case Circuit Breakers

X= Discrimination up to 4kA Y = Cascading up to 40kA

This table is based on circuit breakers installed on a system with a voltage of 415Vac, 50Hz, 3-Phase

Upstream circuit breakers must have their thermal and magnetic characteristics set at their maximum values to obtain the stated discrimination level.

4/40 means that up to 4kA, only the downstream circuit breaker will trip. Above this level, either or both circuit breaker will trip.

This combination has been tested in series for cascading at 40kA

Fuse Backup Let-through Energies

Technical Data on HRC Fuses Type Tested for Back-up Protection of Eaton Quicklag and ELQ-TW Circuit Breakers

Frequently Asked Questions

1. Is there a D Curve Quicklag Miniature Circuit Breaker? No, because D Curve is defined in AS/NZS60898.1 and the Quicklag breakers are tested to different standards AS3111 and AS2184.
2. What is the mechanical and electrical life of the Quicklag? The Quicklag is tested to comply with AS2184-1980, this standard's endurance test requires 6,000 operations with the rated current and 4,000 without, 10,000 operation in total.
3. What are the contact ratings of the Quicklag alarm switch? The Burgress type V4 Quicklag alarm switch has the following contact ratings: @125/250V AC = 5A resistive and 5 A inductive @30V DC = 5A resistive and 3A inductive
4. What de-rating should be applied for application of the quicklag at elevated ambients Refer to Figure A

Figure A: Quicklag De-rating Table